| Aiken to Red Bank (New Jersey) | 632.59 mi (1,018.05 km) |
| Aiken to Red Bank (Tennessee) | 231.10 mi (371.92 km) |
| Aiken to Red Bluff (California) | 2,266.20 mi (3,647.09 km) |
| Aiken to Red Hill (South Carolina) | 157.13 mi (252.88 km) |
| Aiken to Red Oak (Texas) | 874.40 mi (1,407.21 km) |
| Aiken to Red Wing (Minnesota) | 959.18 mi (1,543.66 km) |
| Aiken to Redan (Georgia) | 140.95 mi (226.83 km) |
| Aiken to Redding (California) | 2,272.17 mi (3,656.70 km) |
| Aiken to Redland (Maryland) | 463.42 mi (745.81 km) |
| Aiken to Redlands (California) | 2,025.27 mi (3,259.36 km) |
| Aiken to Redmond (Oregon) | 2,222.67 mi (3,577.05 km) |
| Aiken to Redmond (Washington) | 2,300.15 mi (3,701.73 km) |
| Aiken to Redondo Beach (California) | 2,095.60 mi (3,372.55 km) |
| Aiken to Redwood City (California) | 2,276.48 mi (3,663.65 km) |
| Aiken to Reedley (California) | 2,130.06 mi (3,428.00 km) |
